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Journal of Thermal Science 2021年第5期30卷 1572-1580页

作者： WANG Xuehui YAN Yuying wright Edward HAO Xinyue GAO Neng Fluids and Thermal Engineering Research Group Faculty of EngineeringUniversity of NottinghamNottinghamNG72RDUK Ningbo Institute of Technology Zhejiang UniversityNingbo315100China Research Centre for Fluids and Thermal Engineering University of Nottingham Ningbo ChinaNingbo315100China

In this paper,the entrainment ratio,pump work,heat loads of heat exchangers and COPthermal were theoretically evaluated for a solar-driven ejector-vapor compression hybrid refrigeration system with R1233zd(E)and R1336mzz(Z)as the working *** evaluation of the utilization potentials of R1233zd(E)and R1336mzz(Z)was presented by comparing the system performance with that of R245fa,a commonly used refrigerant in the ejector *** results indicated that the systems with R1233zd(E)and R1336mzz(Z)had a higher entrainment ratio and lower pump *** pump works when using R1233zd(E)and R1336mzz(Z)can be up to 14.59%and 38.05%lower than those of R245fa,***,the system showed the highest COPthermal utilizing R1233zd(E)followed by that of R245fa,with the R1336mzz(Z)system having the lowest *** differences between R1233zd(E)and R1336mzz(Z)systems,R1233zd(E)and R245fa systems were 4.33%and 2.0%,*** paper was expected to provide a good reference for the utilizing prospect of R1233zd(E)and R1336mzz(Z)in ejector refrigeration systems.

关键词： low GWP alternative refrigerants ejector R1233zd(E) R1336mzz(Z)

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新的核数据使恒星中的重元素困境恶化

物理 2024年第6期53卷 410-410页

作者：周书华(译) 中国原子能科学研究院

天体物理学家遇到一个与元素铈有关的问题:模型预测,某些恒星中含有的这种重元素应该比天体物理观测所发现的少得多。最近在欧洲核子研究中心的中子飞行时间(n_TOF)装置上进行的实验已经将理论和观测之间的差距扩大了20%。参与这项工作... 详细信息

天体物理学家遇到一个与元素铈有关的问题:模型预测,某些恒星中含有的这种重元素应该比天体物理观测所发现的少得多。最近在欧洲核子研究中心的中子飞行时间(n_TOF)装置上进行的实验已经将理论和观测之间的差距扩大了20%。参与这项工作的研究人员说。

关键词：天体物理学家重元素恒星核数据天体物理观测模型预测欧洲核子研究中心

Development and Extension of An Aggregated Scale Model:Part 2-Extensions to ASMITA

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China Ocean Engineering 2016年第5期30卷 651-670页

作者： ian TOWNEND Zheng Bing WANG Marcel STIVE Zeng ZHOU University of Southampton Southampton S0171B JUK TU Delft Delft 2600 AAThe Netherlands Deltares Delft 2600 MHThe Netherlands Jiangsu Key Laboratory of Coast Ocean Resources Development and Environment Security Hohai UniversityNanjing 210098China

Whilst much attention has been given to models that describe wave, tide and sediment transport processes in sufficient detail to determine the local changes in bed level over a relatively detailed representation of the bathymetry, far less attention has been given to models that consider the problem at a much larger scale （e.g. that of geomorphological elements such as a tidal flat and tidal channel）. Such aggregated or lumped models tend not to represent the processes in detail but rather capture the behaviour at the scale of interest. One such model developed using the concept of an equilibrium concentration is the Aggregated Scale Morphological Interaction between Tidal basin and Adjacent coast （ASMITA）. In a companion paper （Part 1）, we detail the original model and provide some new insights into the concepts of equilibrium, and horizontal and vertical exchange that are key components of this modelling approach. In this paper, we summarise a range of developments that have been undertaken to extend the original model concept, to illustrate the flexibility and power of the conceptual framework. However, adding detail progressively moves the model in the direction of the more detailed process-based models and we give some consideration to the boundary between the two.

关键词： estuary tidal inlet morphology tides waves sediment transport

Nanoscale viscoelastic properties and adhesion of polydimethylsiloxane for tissue engineering

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Acta Mechanica Sinica 2014年第1期30卷 2-6页

作者： J.Chen K.E.wright M.A.Birch School of Mechanical & Systems Engineering Newcastle University Arthritis Research UK (ARUK) Tissue Engineering Centre Institute of Cellular MedicineNewcastle UniversityUK Research UK (ARUK) Tissue Engineering Centre Institute of Cellular MedicineNewcastle UniversityUK St James’ University Hospital University of Leeds UK

It has shown that altering crosslink density of biopolymers will regulate the morphology of Mesenchymal Stem Cells （MSCs） and the subsequent MSCs differentia- tion. These observations have been found in a wide range of biopolymers. However, a recent work published in Nature Materials has revealed that MSCs morphology and differen- tiation was unaffected by crosslink density of polydimethyl- siloxane （PDMS）, which remains elusive. To understand such unusual behaviour, we use nanoindentation tests and modelling to characterize viscoelastic properties and sur- face adhesion of PDMS with different base：crosslink ratio varied from 50：1 （50D） to 10：1 （10D）. It has shown that lower crosslink density leads to lower elastic moduli. De- spite lower nanoindentation elastic moduli, PDMS with lowest crosslink density has higher local surface adhesion which would affect cell-biomaterials interactions. This work suggests that surface adhesion is likely another important physical cue to regulate cell-biomaterials interactions.

关键词： Bioploymer- Nanoindentation- Viscoelasticity Surface adhesion

Automatic Synthesis of Batch Process Operating Procedures

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Chinese Journal of Chemical Engineering 1998年第1期6卷 46-53页

作者：王保国王春艳许锡恩 Allen R.wright Department of Chemical Engineering Tianjin University Batch CAD Ltd. Newcastle upon TyneNE14LEUK

A three-step synthesis strategy for the automatic synthesis of operating procedures in batch processoperations is presented in this *** first step is pre-operation which consists of a set of checks that mustbe considered before starting the basic process *** second step is operation which is described by a setof basic control *** third step is post-operation described by a set of instructions that must becarried out when the basic process operation is *** three-step synthesis method has been imple-mented as part of a prototype recipe management system.

关键词： batch process operating procedure control step

Development of Biomimetic Squid-Inspired Suckers

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Journal of Bionic Engineering 2012年第4期9卷 484-493页

作者： Jinping Hou Edward wright Richard H. C. Bonser George Jeronimidis Centre for Biomimetics School of Construction Management and Engineering University of Reading Reading RG6 6AY UK School of Engineering and Design Brunel University Uxbridge Middlesex UB8 3PH UK

Biomechanical properties of squid suckers were studied to provide inspiration for the development of sucker artefacts for a robotic octopus. Mechanical support of the rings found inside squid suckers was studied by bending tests. Tensile tests were carried out to study the maximum possible sucking force produced by squid suckers based on the strength of sucker stalks, normalized by the sucking areas. The squid suckers were also directly tested to obtain sucking forces by a special testing ar- rangement. Inspired by the squid suckers, three types of sucker artefacts were developed for the arm skin of an octopus inspired robot. The first sucker artefact made of knitted nylon sheet reinforced silicone rubber has the same shape as the squid suckers. Like real squid suckers, this type of artefact also has a stalk that is connected to the arm skin and a ring to give radial support. The second design is a straight cylindrical structure with uniform wall thickness made of silicone rubber. One end of the cylinder is directly connected to the arm skin and the other end is open. The final design of the sucker has a cylindrical base and a concave meniscus top. The meniscus was formed naturally using the surface tension of silicone gel, which leads to a higher level of the liquid around the edge of a container. The wall thickness decreases towards the tip of the sucker opening. Sucking forces of all three types of sucker artefacts were measured. Advantages and disadvantages of each sucker type were discussed. The final design of suckers has been implemented to the arm skin prototypes.

关键词： biomimetics squid sucker sucking force artificial sucker

Reviewing the Safe Shipping of Lithium-Ion and Sodium-Ion Cells:A Materials Chemistry Perspective

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Energy Material Advances 2021年第1期2021卷 1-12页

作者： Ashish Rudola Christopher J.wright Jerry Barker Faradion Limited The Innovation Centre217 PortobelloSheffield S14DPUK

High energy density lithium-ion(Li-ion)batteries are commonly used *** decades’worth of intense research has led to a good understanding on several aspects of such ***,the issue of their safe storage and transportation is still not widely understood from a materials chemistry *** international regulations require Li-ion cells to be shipped at 30%SOC(State of Charge)or *** this article,the reasons behind this requirement for shipping Li-ion batteries are firstly reviewed and then compared with those of the analogous and recently commercialized sodium-ion(Na-ion)*** such alkali-ion batteries,the safest state from their active materials viewpoint is at 0V or zero energy,and this should be their ideal state for storage/***,a“fully discharged”Li-ion cell used most commonly,composed of graphitebased anode on copper current collector,is not actually at 0V at its rated 0%SOC,contrary to what one might expect—the detailed mechanism behind the reason for this,namely,copper dissolution,and how it negatively affects cycling performance and cell safety,will be summarized *** will be shown that Na-ion cells,capable of using a lighter and cheaper aluminum current collector on the anode,can actually be safely discharged to 0V(true 0%SOC)and beyond,even to reverse polarity(negative voltages).It is anticipated that this article spurs further research on the 0V capability of Na-ion systems,with some suggestions for future studies provided.

关键词： cycling summarized alkali

Experimental and Numerical Study of Structural Identification Using Non-Linear Resonant Decay Method

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Sound & Vibration 2019年第3期53卷 75-95页

作者： Mehdi Sarmast Hamed Ghafari Jan R.wright Kennesaw State University Department of Mechanical EngineeringMD 9075840 Polytechnic Lane MariettaGA 30060USA Malek Ashtar University of Technology Department of Aerospace EngineeringLavizanTehran 15875Iran School of Mechanical Aerospace and Civil EngineeringUniversity of ManchesterManchester M139PLUK

One of the practical approaches in identifying structures is the non-linear resonant decay method which identifies a non-linear dynamic system utilizing a model based on linear modal space containing the underlying linear system and a small number of extra terms that exhibit the non-linear *** this paper,the method is illustrated in a simulated system and an experimental *** main objective of the non-linear resonant decay method is to identify the non-linear dynamic systems based on the use of a multi-shaker excitation using appropriated excitation which is obtained from the force appropriation *** experimental application of the method is indicated to provide suitable estimates of modal parameters for the identification of non-linear models of structures.

关键词： Non-linear modal identification non-linear dynamic system non-linear resonant decay method force appropriation approach

Experimental Study on the Mobility of Channelized Granular Mass Flow

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Acta Geologica Sinica(English Edition) 2016年第3期90卷 988-998页

作者： ZHOU Gongdan Nigel G.wright SUN Qicheng CAI Qipeng Key Laboratory of Mountain Hazards and Earth Surface Process Chinese Academy of Sciences Institute of Mountain Hazards and Environment Chinese Academy of Sciences & Ministry of Water Conservancy School of Civil Engineering University of Leeds State Key Laboratory for Hydroscience and Engineering Tsinghua University College of Civil Engineering Huaqiao University

Granular mass flows （e.g., debris flows/avalanches） in landslide-prone areas are of great concern because they often cause catastrophic disasters as a result of their long run-out distances and large impact forces. To investigate the factors influencing granular mass flow mobility, experimental tests were conducted in a flume model. Granular materials consisting of homogeneous sand and non- homogeneous sandy soil were used for studying particle size effects. Run-out tests with variable flow masses, water contents, and sloping channel confinement parameters were conducted as well. The results indicated that granular mass flow mobility was significantly influenced by the initial water content; a critical water content corresponding to the smallest flow mobility exists for different granular materials. An increase in the total flow mass generally induced a reduction in the travel angle （an increase in flow mobility）. Consistent with field observations, the travel angles for different granular materials decreased roughly in proportion to the logarithm of mass. The flume model tests illustrate that the measured travel angles increase as the proportion of fine particles increases. Interestingly, natural terrain possesses critical confinement characteristics for different granular mass flows.

关键词： granular mass flow mobility water content flow mass fine particle channel confinement

What do teachers see?Perceptions of school-time physical activity programs on student behavior

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Journal of Sport and Health Science 2020年第1期9卷 50-52,F0003页

作者： Jennifer M.Sacheck Catherine M.wright Department of Exercise and Nutrition Sciences Milken Institute School of Public HealthThe George Washington UniversityWashingtonDC 20052USA Gerald J.and Dorothy R.Friedman School of Nutrition Science and Policy Tufts UniversityBostonMA 02111USA

In the United States, children are not meeting daily recommendationsfor 60 min of moderate・to・vigorous activity.1Because children spend a large portion of their days in school, ithas been further recommended that children accumulate 30 minof their physical activity (PA) during school hours.2 Our previousresearch has demonstrated with objective measures that only8%—9% of elementary school children meet this goal, with anaverage accumulation of 18 min/day.3,4 This finding is of concerngiven the numerous benefits that PA has not only on healthoutcomes,5-8 but also on academic achievement.9 For example,there is heightened awareness that children benefit from PAthroughout the school day in terms of attention to task, memory,behavior, and, ultimately, academic performance.10 Schooladministrators acknowledge this link, but still face barriers toincorporating PA for schoolchildren, including limited time andresources for physical education (PE) and recess.

关键词： spend behavior school